Static noise at low volume on mi4c with Poweramp

[Resdot]

Hi,

I have a mi4c with a pair of xiaomi Hybrid headphones. I purchased the Poweramp app pro for listening to music. My mainly problem is that I have a noise sound at low volume levels, is like a static buzz and look like is relating to the sound settings of Miui. I tried everything in the Poweramp settings but I cannot find a way to solve it. Also I tried to modify the mixer_paths.xml file of Miui but I cannot get with the correct settings.

Could you please help me with this? I cannot find many information of how to get rid of this static noise.

I found a similar problem here but looks like works better on CM13 since on Miui7 the noise is still there after the modifications:

https://forum.xda-developers.com/redmi-note-3/how-to/fix-crackling-static-noise-headphones-t3453004

Thanks in advance

 

Edit, I attached the original mixer_paths.xml file from Miui 

mixer_paths.xml